Combination-lock.



J. W. HOLZ.

COMBINATION LOCK.

APPLICATION FILED APR.19, 1915.

1 171 ,202. Patented Feb, 8, 1916.

THE COLUMBIA FLANOGRAPH $0., WASHINGTON, D. c

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I IJOHN wirronaor nnrnom, Mxorardhn;

To all whomjit may concern! I Be itknown that I, JOHN W. HOLZI, a" at De-' citizen of the United States, residin trolt, in thecounty of Wayne and tate of Michigan, have invented anew and useful Combination-Lock, of which the following is a specification.

This invention relates to looks provided T with notched circular tumblers which'may be positioned by means of revoluble' knobs or buttons, and its object is to provide a device of this character which shall be strong and easily assembled and which may be cheaply constructed.

construction illustrated the accompanying drawings and specifically pointed out in the claims.

an elevation of the lock with the cover plate removed.

"Fig.3 is a section on the line-33 of Fig. I 2. Fig. 4: is a section of the tumblers. Fig;-

5 is an elevation of one of thetumblers .and

of the latch. I Figs. 6 and 7 are views of two other tumblers. Fig. 8 is an elevation of the latch moved out of engagement with 'the Similar reference characters refer to like parts throughout theseveral views.

The case or receptacleto which this look is attached may be of any desired construction anclforms no part of this invention. It

is desirable that one of the members to be secured together shall be provided with. a

hasp 1 having a notch2toreceive a latch, and the other member be adapted to support the body of the lock, -which,'inthe present case, is shown to consist" of the-endplate 3 cylindrical ring 4l,'radial flange 5 and cover plate 6. An annular dial plate 7 may be secured to one of the members to. be secured thorizedpersons attemptingto operate together and may have characters" 8 of any .deslred type.

Its inner diameter: may be ust aboutthe same as that of the knob 9, as

shown 1 ,'or the size may be; such that indlcatingfingers 10 may be mounted on the knob ll andextendtowardthe ring 12. A plurality of fingers lo or. arrows 1 1 (Fig. 1) may be employed to confuse unauthe lock.

Secured tothe I This invention conslsts in the detailsof any desirable constructiom'as shown'in Figs.

Specification of Letters Patent. Patente 'Fb.,8,-1916. i Application filed 1 mm, 1915. Seria1No. 2 2,25 5.' I

- 15611 which the-tumblers is," 17 ad 18are- 3 and 4. On the end'iofthe shaft1 5, opposite the 'knob is'secured a fourth tumbler 19, provided with: a pin 20 that extends through the circular slots 22, 23 and; 2a in the tumblers 16, 17 and 18, respectively. The'periphery of each tumbler has a .deep i1, L notch-25 and manyfs'mall notchesor nick =26. The tumbler 16 is slightly larger than the tumbler 17 adjacent to it; this tumbler 17 is'slightl-y larger "than the tumbler}. 18

nextto thelatch; and this,in turn,'is slightly largerthan the tumbler 19 on the end off the shaft 15., By turning the knob and the shaft 15, all the tumblers canjbeturned to the right (by meansof the. pin ZO) until the leftjuntil thetumbler 17; is-at-the position tumbler 16 'is'at the position shown in Fig.

shownin Fig. 6'; 'th-en to, the right until the tumbler 18 is in thepositio'n' shown in Fig.

7;; and then to the left-until the tu'mbler'lil t; H

is -in'the position-shown in Fig. 2. After tumbler 16 11218 ibeen positioned, the pin" 20 moves inits long slot22to, position the turnbler 17 After that, the pin 20.nio'ves in the V slotsin the tumblers 16' and 11- to, position all three s'lottedtumblers until-"the tumbler Mounted on the shaft 15-is alatch consisting of-a'plate 2-7 having a lip 28 at one end adaptedzto engage in the notchafl, and [an 1 the tumbler 18. And. after this-tumbler is 7" "positioned, the pin 20,moves. in'the slots of" oppositely .eXtendingpinQQZ at-the' other on which isl'mounted a -:paw1"30,h'aving; aglip; Q. 31 adapted' to engage all'the tumblerswzA i end of the tension spring, 33 andi'th-e. other" post-'32 mounted on thefplate 3 carriesuone end of the spring connects to -the}1ip'[3l"of the'pawl 30. A=small-lug35projects from H the plate 3 about the' 'sam'e height as the thickness ofpthe pawlSO whlch-may engage therewith.- I p WVhen' the tumblers have beenfpositioned as I [shown in the drawings, the shaft 15 may be.

turnedto the left,,and the end tumbler 19, by reason. of the lip 3101 the pawl 30 extend ng -into itsdeep notch 25, will pullthewpawl :aroundwith it-to the, left andcarry thelatch lip-280m thelplate 27 out of the notch 2 in 40 portion of the latch plate 27 that extends the hasp 1, asshown in Fig. 8. This move- .ment'will slide the pawl up along the lug and move the lip 31 radially outward out of the deep notches 25 in all the tumblers until finally this lip will escape from the notches, as shown in dotted lines in Fig. 5,

permitting the tumblers to freely revolve un-- derneath this lip and permit the latch to be line position of the pawl in Fig. 5.

As all the tumblers are formed with nicks 26, the same clicking will be heard and felt at all times, no matter which tumbler is engaged by the lip 3lofthe pawl. Thus the click of the pawl dropping from one tumbler to the other is indisting uishable. By

changing the relative positions of the notches 25 and the circular slots in the tumblers 16, 17 and 18, and the relative positions of the pin 20 .and notch 25 of the tumbler 19, the combination of the look may be varied. This may even be done by omitting or turning over any one or more of the slotted tumblers.

It will be noted that a single spring holds both the pawl and latch in operative position and-'thatthe tumblers can be moved in either direction to carry them to locking position. The extreme simplicity of this construction prevents it getting outof' order. By reason of the latohplatebeing bent down (Fig. 3) to permit the pawl 30 to lie between it and the plate 3 of the lock case,

this pawl will always be guided for proper movement and be prevented from tilting.

9 The lug 35 may be so secured to the plate 3 that there is no possibility of its getting loose, but in the event this should occur, it will be prevented from moving out by that over it. This lug forces the pawl out of engagementwith the tumblers when the latch is swungfaround beyond a certain predetermined distance and all of the tumblers may then revolve freely, the engagement of the lip 31 with their peripheries occurring immediately by reason'of the spring 33 pulling the latch plate back to normal position.

The details and proportions of:construction of this look may all be variedwithout departing from'the spirit of'my invention as setforth in the claims.

1. In a combination a shaft revoluble therein, a tumbler loosely mounted on' the shaft and having a notch in its periphery and a segmental slot, a tumbler secured to the shaft and having a notch in its periphery, a pin extending from said second tumbler through the slot in the first, a latch plate pivotallyjmo-unted on the shaft, a pawl mounted on the plate and havinga'lip in engagement with said tumblers and adapted to enter saidnotches,

of hasp-engaging position.

look, a lock body,

notch in its periphery, a pin extending from said second tumbler through the slot in the first, a latch plate'pivotally mounted on the shaft, apawlv mounted on the plate and having a lip. in engagement with said tumblers and adapted to enter said notches, a hasp to be engaged by the latch, and a lug secured to the lock body to swing the pawl out of the notches when the latch is swung a sufiicient distance.

3. In a combination lock, a'lock body, a shaft revoluble therein, a knob for turning the shaft, a plurality of tumblers loosely mounted on the shaft and each having a notch in its periphery and a segmental slot, a tumbler secured to the shaft and having a notch in its periphery and a pin eXtending into the slots in the other tumblers, a latch plate pivotally mounted on the shaft, a pawl pivoted to said plate, a spring to hold the pawl against the peripheries of the tumblers, and a hasp adapted to be engaged by said latch plate under tension of said spring. p 7

4. In a combination look, a body, a'shaft revolubly mounted therein, a plurality of tumblers on the shaftfand each having a notch in its periphery, a latch plate pivotally mounted on the shaft, a hasp adapted to be engaged by the. latch, a pawl mounted on the latch plate and adapted to enter said notches, a spring to hold the latch plate in hasp-engaging position and the pawl in engagement with the tumblers, and stationary means engaged by the pawl whereby it may be forced out of the notches in the tumblers when the latch plate is moved out 5. In a combination look, a lock body, a shaft revoluble therein, a tumbler loosely mounted on theshaft andhaving a notch in its periphery and a segmental slot, a tumrevolubly' mounted therein, a plurality of tumblers on the shaft, each having a notch in its periphery, a platepivotally mounted on the shaft, a pawl mounted on the plate and adapted to enter said notches, a spring tion in the Presence .of' two subsc ribing'd e to hold the-pawl in engagement with the witnesses:

tumblers and stationary means engaged by. v r. a l e e the pawl whereby it may be forced out of H f 5 the notches in the tumblers when the plate Witnesses; V 7 g is swung in one direction about the shaft. EDWARD N. PAGELSEZN, In testimony whereof I sign this specifica- HUGo KREI BRING.

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